Title: Fatal Error – cannot activate
Last modified: June 4, 2018

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# Fatal Error – cannot activate

 *  Resolved [designrox](https://wordpress.org/support/users/designrox/)
 * (@designrox)
 * [7 years, 12 months ago](https://wordpress.org/support/topic/fatal-error-cannot-activate-6/)
 * I updated turned off my plugins before I moved my site to a new location. Once
   moved I went back to the plugins and tried to activate them but when I went to
   activate the BackWPup plugin I got this error:
 * Warning: require_once(__DIR__/inc/class-system-requirements.php) [function.require-
   once]: failed to open stream: No such file or directory in /home/resto/public_html/
   wp-content/plugins/backwpup/backwpup.php on line 551
 * So now I can’t activate the backup plugin. Please help! What do I do?

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [happyAnt](https://wordpress.org/support/users/duongcuong96/)
 * (@duongcuong96)
 * [7 years, 12 months ago](https://wordpress.org/support/topic/fatal-error-cannot-activate-6/#post-10366445)
 * [@designrox](https://wordpress.org/support/users/designrox/)
    Please try to delete
   the plugin and then try to install it again 🙂 Hope that helps you 😀
 *  [happyAnt](https://wordpress.org/support/users/duongcuong96/)
 * (@duongcuong96)
 * [7 years, 11 months ago](https://wordpress.org/support/topic/fatal-error-cannot-activate-6/#post-10389550)
 * [@designrox](https://wordpress.org/support/users/designrox/)
    since we haven’t
   heard back from you, I’m going to mark it as resolved. If you’re still having
   problems, feel free to let us know ;),
 * Btw, If you find BackWPUp is useful for you, we would really appreciate if you
   leave a positive review and rating.
    This would encourage us to develop new free
   features and provide free support 😀 [https://wordpress.org/support/plugin/backwpup/reviews/](https://wordpress.org/support/plugin/backwpup/reviews/)

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Fatal Error – cannot activate’ is closed to new replies.

 * ![](https://ps.w.org/backwpup/assets/icon-256x256.png?rev=3236141)
 * [BackWPup – WordPress Backup & Restore Plugin](https://wordpress.org/plugins/backwpup/)
 * [Support Threads](https://wordpress.org/support/plugin/backwpup/)
 * [Active Topics](https://wordpress.org/support/plugin/backwpup/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/backwpup/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/backwpup/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [happyAnt](https://wordpress.org/support/users/duongcuong96/)
 * Last activity: [7 years, 11 months ago](https://wordpress.org/support/topic/fatal-error-cannot-activate-6/#post-10389550)
 * Status: resolved